*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
body{
    background: #ff4f4f;
    width: 100%;
    height: 100%;
}
.bubbles{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;

}
.bubbles li{
    position: absolute;
    list-style: none;
    display: block;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, .2);
    animation: animate 25s linear infinite;
    bottom: -150px;
}
.bubbles li:nth-child(1){
    left: 25%;
    width: 80px;
    height: 80px;
    animation-delay: 0;
}
.bubbles li:nth-child(2){
    left: 10%;
    width: 20px;
    height: 20px;
    animation-delay: 2s;
}
.bubbles li:nth-child(3){
    left: 70%;
    width: 20px;
    height: 20px;
    animation-delay: 4s;
}
.bubbles li:nth-child(4){
    left: 40%;
    width: 60px;
    height: 60px;
    animation-delay: 18s;
}
.bubbles li:nth-child(5){
    left: 65%;
    width: 20px;
    height: 20px;
    animation-delay: 4s;
}
.bubbles li:nth-child(6){
    left: 75%;
    width: 110px;
    height: 110px;
    animation-delay: 7s;
}
.bubbles li:nth-child(7){
    left: 70%;
    width: 20px;
    height: 20px;
    animation-delay: 8s;
}
.bubbles li:nth-child(8){
    left: 50%;
    width: 35px;
    height: 35px;
    animation-delay: 18s;
}
.bubbles li:nth-child(9){
    left: 70%;
    width: 20px;
    height: 20px;
    animation-delay: 9s;
}
.bubbles li:nth-child(10){
    left: 50%;
    width: 35px;
    height: 35px;
    animation-delay: 10s;
}
@keyframes animate {
    0%{
        transform: translateY(0)rotate(0deg);
        opacity: 1;
        border-radius: 0;
    }
    100%{
        transform: translateY(-1000px)rotate(720deg);
        opacity: 0;
        border-radius: 50%;
    }

}

